That's a Radeon RX 580 or Geforce 1060 6GB in Australia.
But... The correct answer would be a Geforce 1070 in the UK for that price.
https://www.ebuyer.com/753824-asus-gtx-rog-strix-1060-gaming-6gb-gddr5-graphics-card-strix-gtx1060-6g-gaming
But shop around, I am not really up-to-date on what a good PC store is in the United Kingdom.
--::{PC Gaming Master Race}::--